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' (No Model.) 2 Sheets-Sheet 1. e L. B. KENNEDY.

'BRIGK MACHINE.

Patented Sept. 8, 1885.

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" UNITED STATES PATENT ()FFICE LEWIS B. -KENNEDY, OF ST. LOUIS, MISSOURI.

BRICK-MACHINE.

SPECIPICATIONfQrming part of Letters Patent No. 325,940, dated September 8, 1885.

Application filed July 16, 1885.

had therein to the accompanyingdrawings.

My invention relates to improvements in brick-machines, and more particularly that class known as dry-clay machines.

In an application for a patent for a brickmachine filed by me June 17, 1885, Serial No. 168,953, I have shown, described, and claimed the upper and lower plungers,as connected to angle or bell-crank levers by means of pitmen, said pitmen being connected to a cross-head and operated by the piston of a steam, air, or hydraulic engine.

In many instances it is not convenient or desirable to use steam, air, or hydraulicpressure, and this is more particularly the case in country places, where skilled labor is not attainable. It is for the purpose of supplying the demands of such a trade as this thatIhave adapted the machine above referred to, to be operated by the devices to be hereinafter described instead of with steam, air, or water pressure acting on the piston of a cylinder. The object, therefore, of my presentinvention is to dispense with the cylinder, piston, and machinery necessary to operate the steamvalves, as shown in the application above referred to, and to operate the levers carrying the plungers by means of toggle-levers connected to a pitman,which in turn is operated by cams on a continuously-rotating shaft, as will more fully hereinafter appear.

Referring to the drawings, Figul e 1 is a longitudinal sectional view of my machine, showing the position of the working parts when the plungers are exerting their greatest pressure on the clay within themold. Fig.2

is a similar view showing the levers in a depressed or lower position and the plungers removed from contact with the clay.

The angle or bell-crank levers A A for operating the upper and lower plungers,BO, are connected or pivoted to the cross-bars Din the upper and lower ends of the frame E of the machine, said angle or bell-crank levers being connected to the plungers, or the cross-heads (No model.)

which operate the plungers, by means of links F. These parts are shown in the drawings, and are of the same construction as the corresponding parts shown and described in the' application above referred to, and only such reference will be made thereto as willfully and clearly describe the novel features of this invention. The hooks for connecting the upper cross-head and plungers with the lower plungers, the lever for raising the lower plungers to assist in ejecting the brick from the mold, and the devices for operating said lever,

together with the feed-box, and devices for moving the same backward and forward over the mold, are not shown in the drawings hereto annexed, but are of the same construction 7 and adapted to be operated in the same manner as in the machine above referred to.

The outer ends of the bell-crank or anglelevers A A are connected to the pitmen G.H,one or more being used as occasion may require. said pitmen being connected to the cross-head I, adapted to work in guideways Kin the frame E of the machine.-

L indicates one or a series of toggle-levers, the lower ends of which are pivoted to a crossbar or bracket, M, secured to the base of the machine, the upper ends of said'levers Lbeing secured to the cross-head I, above referred to.

The knuckles or jointed portions of the togglelevers are connected to the shaft N by means of the slotted pitman 0, said pitman being provided with an extended portion, P, I on which is secured the friction-wheel Q.

R is a double cam-plate of peculiar construction, adapted to operate on the pitman O in the following manner: One side oredge of the plate R has a cam'surface, S, which is flanged and diverges or radiates from a point near the shaft on which said cam-plate is mounted to a point, a, where it terminates. The other side of the cam-plate R is provided with a camsurface, T, which commences at or near the point a where cam S terminates and converges toward the shaft N, terminating at the point 1) near said shaft.

As the shaft N revolves in the direction of the arrow the camS impingesagainst the front edge of the friction-wheel Q and draws the pitman O backward, the slot V allowing the shaft N to pass therethrough, and permitting said pitman to be drawn back. This motion straightens the toggles, as shownin Fig. 1, and I as described, said bell-cranklevers being c011- raises the outer ends of the bell-crank o-r angle levers, bringing the plungers B 0 toward each other, and exerting the proper pressure on the clay to form a perfect and solid brick. The requisite pressure having been exerted to form the brick, the continued rotary motion of the shaft N brings the end of the pitman O, or, rather, the rear face of the friction-wheel, against the flanged portion 0 of the cam T, which, owing to its convergency toward the axis or shaft N, pushes the pitman 0 forward, bending the toggles, as shown in Fig. 2, thus moving the plunger 13 upward and the crosshead W of the lower plunger downward, the lower plunger in the meantime being forced upward by the devices described in the application hereinbefore referred to to eject the newlyformed'brick from the mold. This position of the plunger is shown in Fig. 2, the mold and mold plate or frame being indicated by the letter A.

From the foregoing description it is thought that the operation of my machine will be apparent to any one skilled in this art.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, 1s-

1. Inabrick-machine,the angle'or bell-crank levers A, pivoted in the sides of the machine, as described, saidlevers being connected to the plungers by means of links or knuckle-joints which yield in opposite directions, the outer ends (f the angle or bell-crank levers being connected together by a bar which is raised and lowered by toggle-levers operated from a continuously-revolving shaft, as set forth.

2. A brick-machine in which the upper and lower plungers are operated by angle or bellcrank levers, the outer ends of said levers beingjoi-ned by means of pitmen or rods which are connected together and to a cross-head, said cross-head being raised and lowered by means of toggles operated from a continuously-rotating shaft, as set forth.

3. A brick-machine the upper and lower plungers of which are connected to and operated by angle or bellcrank and toggle levers,

nected to a cross-head sliding in ways in the sides of the machine by means of pitman-rods, the cross-head being raised and lowered by means of toggle levers operated from a continuously-rotating shaft, as set forth.

4.. In abrick-machine, theshaftN, provided with the double cam-plate R, in combination with the slotted pitman O andtoggle-levers L, whereby said toggle-levers are straightened and operate the plungers to compress the clay,

and also bend the toggles and separate the plungers by a single rotation of the shaft, as set forth.

5. The double cam-plate 1%,mounted on the axis .or shaft N, said cam-plate being provided with the cam-surface S, diverging from the axis or shaft, in combination with the slotted pitman 0, having the extension P and frictionwheel Q, and the toggle-levers L, with their connections to the angle or bell-crank levers and plungers, whereby the toggles are straightened and the plungers gradually brought toward each other to compress the clay in the mold, as set forth.

6. The double cam-plate R,mounted on the axis or shaft N, said cam -plate being provided with the flanged cam-surface T, converging toward the axis, in combination with the slotted pitman 0, having the extension P and friction-wheel Q, and the togglelevers L, with their connections to the angle or bellcrank levers and plungers,whereby the toggles are bent and the plunger B and cross-head WV are caused to rccede from the point of compression, as set forth.

7. In abrick-machine, the shaft N, provided with the converging and diverging cams, as set forth, in combination with a slotted pitinan, and toggle-levers for operating the plungers, as described.

In testimony whereof I affix m y signature in presence of two witnesses.

LEWIS B. KENNEDY. WVituesses:

THos. J. O. FAGG, W. M. PEITEW'AY. 

